Optothermal pulling, trapping, and assembly of colloids using nanowire plasmons.

  title={Optothermal pulling, trapping, and assembly of colloids using nanowire plasmons.},
  author={Vandana Sharma and Sunny Tiwari and Diptabrata Paul and Ratimanasee Sahu and Vijayakumar Chikkadi and G V Pavan Kumar},
  journal={Soft matter},
  • Vandana Sharma, Sunny Tiwari, +3 authors G V Pavan Kumar
  • Published 20 September 2021
  • Medicine, Physics
  • Soft matter
Optical excitation of colloids can be harnessed to realize soft matter systems that are out of equilibrium. In this paper, we present our experimental studies on the dynamics of silica colloids in the vicinity of a silver nanowire propagating surface plasmon polaritons (SPPs). Due to the optothermal interaction, the colloids are directionally pulled towards the excitation point of the nanowire. Having reached this point, they are spatio-temporally trapped around the excitation location. By… Expand

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